Abstract: Traditional grammar has conceived the study of one-member sentences extracted from texts in different functional styles. The authors have focused on the formal aspect, on the syntax of these structures. It is from the 60s of the twentieth century that linguistic studies take a turn. The grammatical structure is examined according to the meaning it transmits, the contexts in which it is emitted and the communicative intention that is pursued, that is, the semantic, syntactic and pragmatic dimensions are taken into account. A communicative approach to language teaching is followed, aimed at studying the language in use. The theoretical-methodological foundation of this discursive analysis is the textual linguistics and the cognitive, communicative and sociocultural approach. The objective of this article is to propose activities for the teaching-learning of one-member sentences and the analysis of the functionality provided by this grammatical content in a dramatic text with a colloquial style. From the systematization of educational theory and practice, analytical-synthetic, inductive-deductive methods, observation and document analysis were used, which allowed the design of topic I of Spanish Grammar I, as part of the preparation of this subject for the second year of Spanish-Literature major. The textual functionality of the one-member sentences in colloquial style provided a better understanding of the text and a better approach to the speech acts between the interlocutors.Abstract: Traditional grammar has conceived the study of one-member sentences extracted from texts in different functional styles. The authors have focused on the formal aspect, on the syntax of these structures. It is from the 60s of the twentieth century that linguistic studies take a turn. The grammatical structure is examined according to the meaning it ...Show More